Is CVE-2025-60685 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2025-60685 being exploited in the wild.

How severe is CVE-2025-60685?

Medium severity, with a CVSS score of 5.1, published 13 November 2025.

Which products and versions are affected?

TOTOLINK A720r Firmware V4.1.5cu.614_B20230630.

Is there a fix for CVE-2025-60685?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2025-60685 attacked?

It is attacked with local access, in device firmware.

Am I affected by CVE-2025-60685?

Check whether you run TOTOLINK A720r or TOTOLINK A720r Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2025-60685: ToToLink A720R stack buffer overflow in sysconf binary

CVE-2025-60685 · Severity: medium · CVSS 5.1 · Published 2025-11-13

A security vulnerability exists in the ToToLink A720R router, a device used to provide wireless internet connectivity. An attacker with the ability to modify local system files could trigger a crash or potentially take control of the device's operating system. This could lead to a complete disruption of internet services or unauthorized access to the router's internal functions.

Technologies: TOTOLINK A720r, TOTOLINK A720r Firmware. Vendors: TOTOLINK.

Quick answers

Is CVE-2025-60685 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2025-60685 being exploited in the wild.
How severe is CVE-2025-60685?: Medium severity, with a CVSS score of 5.1, published 13 November 2025.
Which products and versions are affected?: TOTOLINK A720r Firmware V4.1.5cu.614_B20230630.
Is there a fix for CVE-2025-60685?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2025-60685 attacked?: It is attacked with local access, in device firmware.
Am I affected by CVE-2025-60685?: Check whether you run TOTOLINK A720r or TOTOLINK A720r Firmware at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A stack-based buffer overflow exists in the 'sysconf' binary of the ToToLink A720R router (firmware V4.1.5cu.614_B20230630) within the sub_401EE0 function. The vulnerability is caused by the unsafe use of sscanf() with a %s format specifier when parsing data read from /proc/stat via fgets(). Specifically, the binary attempts to write string data into a single-byte char variable (v23), leading to an overflow of adjacent stack memory. An attacker with local filesystem write privileges or the ability to influence the contents of /proc/stat can exploit this to overwrite the return address and achieve arbitrary code execution.

Affected products

ToToLink A720R Router firmware V4.1.5cu.614_B20230630

Timeline

2025-11-13: disclosed: Initial disclosure of CVE-2025-60685
2025-11-13: advisory

References

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